Genetic inheritence Flashcards
1
Q
Dominant allele
A
Allele that is always expressed - even if only one copy is present
2
Q
Resessive allele
A
Allele that is only expressed when there is no dominant allele present.
3
Q
Chromosomes
A
Structures that contain DNA
4
Q
Characteristics controlled by single gene
A
1.) For (mice) colour
2.) Red/ green colour blindness in humans
5
Q
Phenotype….
A
Tells us person’s characteristics caused by their alleles
6
Q
Genotype…
A
Tells us the alleles present
7
Q
Homozygous
A
two copies of the same allele
8
Q
Heterozygous
A
two different alleles
9
Q
FINISH SENTENCE
Most characteristics are…..
A
- a result of several genes interacting rather than inheriting a single gene.
